J-20 5th Generation Fighter VII

Status
Not open for further replies.

Blitzo

Lieutenant General
Staff member
Super Moderator
Registered Member
I am not an engine expert but is this too good to be true deal?

Quote:

"WS-15, like F119, has a three-stage fan driven by a single-stage low pressure turbine and six-stage high pressure compressor driven by single-stage high pressure turbine.

Core engine flow rate: 30kg/s

Turbine inlet temperature: 1841K

Bypass ratio: about 0.25

Full afterburner thrust: 171.3kN ~ 191.6kN."


I'm not sure either, but this guy's writings on PLAN nuclear submarine developments is something I've found somewhat reasonable and compelling.
 

sunnymaxi

Major
Registered Member
I am not an engine expert but is this too good to be true deal?

Quote:

"WS-15, like F119, has a three-stage fan driven by a single-stage low pressure turbine and six-stage high pressure compressor driven by single-stage high pressure turbine.

Core engine flow rate: 30kg/s

Turbine inlet temperature: 1841K

Bypass ratio: about 0.25

Full afterburner thrust: 171.3kN ~ 191.6kN."

you mean inlet turbine temperature is too good to be true or afterburner thrust ..

both characteristics are accurate.
 

56860

Senior Member
Registered Member
I am not an engine expert but is this too good to be true deal?

Quote:

"WS-15, like F119, has a three-stage fan driven by a single-stage low pressure turbine and six-stage high pressure compressor driven by single-stage high pressure turbine.

Core engine flow rate: 30kg/s

Turbine inlet temperature: 1841K

Bypass ratio: about 0.25

Full afterburner thrust: 171.3kN ~ 191.6kN."

I always felt it was reasonable to expect WS-15 to sit somewhere between F135 and F119 (purely in terms of thrust) considering advances in technology since F119 and continued improvements to WS-10. But these thrust numbers put WS-15 solidly in the F135 class. Maybe someone with better knowledge can correct me.
 

sunnymaxi

Major
Registered Member
I always felt it was reasonable to expect WS-15 to sit somewhere between F135 and F119 (purely in terms of thrust) considering advances in technology since F119 and continued improvements to WS-10. But these thrust numbers put WS-15 solidly in the F135 class. Maybe someone with better knowledge can correct me.
afterburner thrust of WS-15 is around 38,000-40,000 lbf
 

Blitzo

Lieutenant General
Staff member
Super Moderator
Registered Member
If dry thrust is around 110 kN, 190 kN of wet thrust doesn’t seem consistent with a BPR of 0.25.

Yeah the numbers look reasonable in that regard but 190kN AB thrust is still a bit higher than we were thinking in the past.


I wonder what the operational rationale of the given BPR, dry thrust and AB thrust requirements were, if those numbers are accurate.
 

sunnymaxi

Major
Registered Member
40,000lbf is 178 kN, which is certainly reasonable, but is also only on the low end of the numbers by horobeyo.

178kN maximum afterburner thrust is within reason, but 191kN is much higher than our previous expectations.
yeah. 178 kN is reasonable thrust

sir my source told me, improved variant is already under development.

better thrust , bypass ratio and other improvements will undertaken in new variant.
 
Status
Not open for further replies.
Top